EP 3840516 A4 20220330 - BACKOFF METHOD AND APPARATUS IN TRANSMISSION PROCESS, DEVICE, SYSTEM, AND STORAGE MEDIUM
Title (en)
BACKOFF METHOD AND APPARATUS IN TRANSMISSION PROCESS, DEVICE, SYSTEM, AND STORAGE MEDIUM
Title (de)
VERFAHREN UND VORRICHTUNG FÜR BACKOFF IN EINEM ÜBERTRAGUNGSVERFAHREN, VORRICHTUNG, SYSTEM UND SPEICHERMEDIUM
Title (fr)
PROCÉDÉ ET APPAREIL D'ATTENTE DANS UN PROCESSUS D'ÉMISSION, DISPOSITIF, SYSTÈME ET SUPPORT DE STOCKAGE
Publication
Application
Priority
CN 2018100706 W 20180815
Abstract (en)
[origin: EP3840516A1] The present application discloses a backoff method and apparatus in a transmission process, a device, a system, and a storage medium, which relate to the field of communication technology. The method includes: a transmitting device performing LBT in an unlicensed frequency band; the transmitting device transmitting an RTS to a receiving device when the LBT has been successfully performed, the RTS including a first backoff time period; the transmitting device transmitting, after having received a CTS transmitted by the receiving device, a C-CTS to the receiving device, the C-CTS including a second backoff time period. In this technical solution, other monitoring devices in the surroundings perform time-division backoff according to the first backoff time period and the second backoff time period, and when the transmitting of the CTS fails, the backoff needs to be performed simply according to the first backoff time period, thereby solving the problem in the related art that after the receiving device fails to transmit the CTS, other devices around the transmitting device still perform backoff for a long time according to a monitored NAV of the RTS, resulting in overprotection.
IPC 8 full level
H04W 74/08 (2009.01)
CPC (source: CN EP US)
H04L 1/1896 (2013.01 - US); H04W 74/008 (2013.01 - US); H04W 74/0808 (2013.01 - CN); H04W 74/0816 (2013.01 - CN EP US)
Citation (search report)
- [XAY] US 2016081010 A1 20160317 - SEOK YONGHO [KR]
- [YA] GB 2542818 A 20170405 - CANON KK [JP]
- [A] HUAWEI ET AL: "Review of existing unlicensed spectrum regulatory requirements affecting physical layer design", vol. RAN WG1, no. Ljubljana, Slovenia; 20141006 - 20141010, 27 September 2014 (2014-09-27), XP050869410, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tsg_ran/WG1_RL1/TSGR1_78b/Docs/> [retrieved on 20140927]
- See also references of WO 2020034124A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3840516 A1 20210623; EP 3840516 A4 20220330; CN 109196946 A 20190111; CN 109196946 B 20220603; US 11871449 B2 20240109; US 2021321455 A1 20211014; WO 2020034124 A1 20200220
DOCDB simple family (application)
EP 18929898 A 20180815; CN 2018100706 W 20180815; CN 201880001045 A 20180815; US 201817267707 A 20180815